Familiarity with church and civil jurisdictions helps us make better sense of records we find for our Mexican ancestors, helps us know where to look for records that pertain to a particular place and time, and helps us trace evolving jurisdictional borders through time. Knowing where and how to find historical and background information about different Mexican localities helps you dig deeper into the lives of your ancestors. Learn about essential reference tools and strategies that will help you identify and learn more about the localities in which your ancestors lived and worked.